Impeller device

The invention discloses an impeller device comprising a front disc and a rear disc, wherein the rear disc is fixedly connected with a wheel hub through a connecting piece, the wheel hub is located in the center of the rear disc, and the rear disc is fixedly provided with blades by taking the central axis of the rear disc as a reference axis; the blades are shaped like straight plates, the outer side edges of the blades form a round, the blades are provided with intersection points on the round, and the extension lines of the blades and the tangent lines at the intersection points of the round form an included angle of 59-61 DEG; and an air outlet is formed in the middle of the front disc, the periphery of the front disc is fixedly connected with the blades to form a closed structure, the periphery of the front disc is shaped like a circular arc, and the circle center of the circular arc is located at the side far away from the blades. The impeller device has the beneficial effects that the blades arranged at the included angle ensure that air flow more smoothly enter the blades, air resistance is reduced, and the noise is effectively reduced. The blades are simple in structure, easy to machine and beneficial to large-scale production, so that the production cost can be effectively reduced. The impeller device is of the closed structure and capable of effectively avoiding air flow loss so as to be relatively high in air outlet volume and higher in working efficiency.